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Review
Firstofall,twoconceptswehavealreadyknownareasfollows:
1. Dependent events: an event or a series of events, must take place before another can begin.
Thesubsequenteventdependsupontheonespriortoit.
2. Statistical fluctuations: The big deal occurs when dependent events are in combination with
anotherphenomenon.
Alexhasyettofigureoutwhatthecombinationofthetwophenomenaabovemeans,andstarts
to lead 15 boy scout members in a single line in order to reach Devil¡¯s Gulch. He supposes he
is walking about two miles per hour, which is about the average speed a person walks, and his
groupcouldcover10milesinaboutfivehours.Afterafewminutes,hefindsoutthelinebecomes
longerandaboyinthemiddlenamedHerbieislaggingbehind.Alexasksthefirstboytowaitfor
Herbieandthefollowingmembersthenwalkmoreslowly.Still,thegapbetweenHerbieandthe
personinfrontofhimisgettingwider.
¨ÏAvrahamY.GoldrattInstitute
Did you notice that this hiking is a dependent event which is combined with statistical
fluctuations? If the first boy does not walk in advance, the second person cannot walk after.
Similarly,thevelocityofallthemembersexcepttheoneatthefrontisrestrictedfromthespeed
of the very member in front of them. This is a simple example of a dependent event. However,
even if each one walks in 3km/h, it cannot be exactly the same speed, which is a statistical
fluctuation.Thethingisthatitcannotbepredictedwhensomeonewillbelateorfaster.
To put it more simply, most of the things that you are doing are connected to others, and the
worldisfullofunpredictablevariables.
¡°What is the goal of your factory?¡± This is the first question that Professor Jonah asks Alex.
Though he asks about the factory, the object could be ascribed to an individual. Now I will ask
you. ¡°What is your goal?¡± While this book does not have a decisive influence in setting and
implementingyourgoal,Ihopeyouadoptalogicalapproachonyourway.
ruiyan0412@hufs.ac.kr
35
NOVEMBER 2018

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